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Ceramic Disc Magnets

Everbeen Magnet:Your Professional Ceramic Disc Magnets Manufacturer!

Everbeen Magnet specializes in the development and processing of various permanent magnet materials such as NdFeB,Ferrite magnets and accessories, electronic components, and magnetic application devices. Our production base is located in the suburbs of Ningbo, Zhejiang Province. It covers a total area of 20,000 square meters, more than 100 employees, and a monthly production capacity of 600 tons of various types of NdFeB(neodymium) magnets. Products are widely used in many fields such as motors and electrical appliances, instruments, speakers, sensors, and office automation equipment.

Why Choose Us

01/

Expertise and Experience
20+ years of experience in the magnet industry, all our sales have 12+ years expertise and knowledge in various types of permanent magnets.

02/

Customization
Most of permanent magnets are customized according to drawing and requests.Be flexible in accommodating customer needs, whether it involves order adjustments, additional information, or other special requests.

03/

Diverse Product Range
Besides Neodymium magnet, we also provide Alnico magnet, Samarium Cobalt (SmCo) magnet, Ferrite(ceramic) magnet, Flexible magnet(Rubber magnet) and Magnetic Products.

04/

Quality Assurance
All magnets are under our strict quality control. We assure you what we offer is superior and quality products. From the beginning of the production to the inspection of finished goods, we pay attention to every detail and try our best to avoid any mistakes carefully.

05/

Effective Communication
Provide responsive and effective communication during the purchasing process, addressing any inquiries promptly and offering support to ensure a smooth transaction.

06/

Timely Delivery
15-30 days according to magnet order information.We promise timely delivery to ensure you receive the goods on time.

Specification

Item number	YSFM-34
Material	SrO or BaO and Fe2O3
Size:	OD: 31mm, ID: 9.5mm, Thickness: 4.75mm
Style:	Disc ceramic
Minimum diatemer	3mm, with dot or no mark
Shape available	Block , ring , disc,segment
Purpose	Science project and DIY, school, work, home,etc.
Minimum Order Quantity:	5000pcs
Price:	Negotiation
Packaging Details:	Standard sea or air packing,such as carton,iron box,wooden box,etc.
Delivery Time:	12~ 15 days
Payment Terms:	L/C, T/T, Western Union
Supply Ability:	5000,000pcs/per month

Advantages of Ceramic Disc Magnets

• Ceramic disc magnets cost much less than other permanent magnet types like neodymium and SmCo disc magnets. This makes them an economical choice in various applications.

• While their magnetic strength pales in comparison with that exhibited by rare-earth counterparts, ceramic disc magnets still offer strong magnetic performance. Considering their size, they can generate significant magnetic fields.

• The high coercivity of ceramic disc magnets means they display high resistance to demagnetization. As such, they can maintain their magnetism to certain elevated temperatures and external magnetic fields.

• The corrosion resistance displayed by ceramic magnets makes them durable suitable for industrial and outdoor environments. As a matter of fact, these magnets do not usually require protective coatings.

• Ceramic disc magnets are available in various sizes featuring different diameters and thicknesses. This allows for their use in different applications as small as magnetic closures in bags to as large as magnetic separators.

• Ceramic magnets do not conduct electricity making them ideal here electrical isolation is necessary. Furthermore, they exhibit low eddy current losses allowing use where minimal energy losses are critical.

Application of Ceramic Disc Magnets

Magnetic Closures

Ceramic disc magnets can be used in making magnetic closures or latches for furniture like cabinets, doors, drawers, and jewelry boxes.

Used as Sensors

When used in proximity sensors and reed switches, ceramic disc magnets detect magnetic field presence. This allows for their use in security systems and automotive applications like window and door sensors.

Motors and Generators

These magnets are utilized in electromechanical devices such as small electric motors and generators. Ceramic disc magnets provide a magnetic field for running the motor.

Headphones and Loudspeakers

The use of ceramic disc magnets in headphones and loudspeakers is useful in the conversion of electrical signals into sound.

Magnetic Coupling Applications

Magnetic couplings utilize ceramic disc magnets to transmit torque between rotating components such as in pumps and other fluid-handling systems.

Magnetic Separations Applications

Ceramic disc magnets are employed in magnetic separation equipment aiding in the removal of ferrous contaminants from liquid and/or solid mixtures. A typical example of such use is in food processing and recycling.

Magnetic Sensors

Many sensors used in vehicles such as throttle position sensors and speed sensors can be fashioned from ceramic disc magnets.

DIY and Craft Projects

These magnets are utilized by hobbyists in personal projects such as making crafts and DIY. These magnets can be used to make art installations, jewelry, and sculptures.

Ceramic Disc Magnets Composition and Fabrication

Powder preparation
Disc magnets start with powder preparation. Iron oxide is reduced from an iron precursor and ball milled to a fine particle size of around 2 microns. After deoxidizing and drying, the resulting iron powder exhibits soft ferromagnetic behavior. Strontium carbonate powder is also weighed and milled to match the chosen stoichiometry.

Mixing and calcining
The iron and strontium carbonate powders are thoroughly mixed to ensure homogeneity throughout the batch. The mixed powder undergoes calcination at 900-1000°C to remove volatile compounds like CO2 and adjust powder surface chemistry.

Compaction
Following ball milling and binder additions, the ceramic powder is compacted into disc magnet green compacts using an applied magnetic field much like their NdFeB counterparts. Pressure around 100-300 MPa is required to achieve necessary green density.

Sintering
The compacted ferrite discs then undergo an extended firing around 1200°C in a highly oxidizing kiln atmosphere to fully densify yet avoid reducing the ferric oxide content.

Machining and testing
The sintered ferrite magnets may be ground to tolerance before final property checks like magnetic strength and resistivity. No further magnetization is done since the ferrite is already magnetized from the compaction stage.

Packaging and Shipping

Professional Export Package:

Shipment method: By sea. Customized wooden case By air, Professional magnetic isolation packaging Cartons packages are for air shipment, and we will hold cartons with one case or pallets for sea shipment.

Our Certificates

FAQ

Q: What information do i need to offer when I have an enquiry?

A: If have any enquiry, please kindly advise the following information: Magnet grade or magnetic properties, size, shape and drawing with tolerances, Magnetic direction, quantity, Surface coating etc.

Q: How long is your delivery time?

A: For stock products, we will send goods to you within 1-2 days after receiving the payment. If we do not have them in stock, generally speaking, production time is 15-20days.

Q: Can you provide samples? Is it free or extra?

A: Sample is available, if it is customized, small magnet can be free of charge; if it needs open mold, customers should pay for the cost. Customer should cover for the freight cost.

Q: Can I print logo on the magnets?

A: YES, We can help to print customized logo or marks on the magnets..

Q: How can we guarantee quality?

A: Always a pre-production sample before mass production; Always final Inspection before shipment;

Q: Can ceramic disc magnets be re-magnetized?

A: Yes, ceramic magnets can be re-magnetized if they have lost some of their magnetism, unless they have been exposed to extremely high temperatures.

Q: How do you determine the strength of a ceramic disc magnet?

A: Magnet strength can be measured using devices like Gaussmeters or pull testers, which measure the magnetic field strength and pull force, respectively.

Q: What are ceramic disc magnets made of?

A: Ceramic disc magnets are primarily composed of strontium carbonate or barium carbonate and iron oxide.

Q: How to clean ceramic magnets?

A: Prepare the cleaning solution: Mix your chosen cleaner with warm water in a small bowl. Wipe the magnet: Dampen a soft cloth with the solution and gently wipe the magnet's surface, focusing on areas with visible dirt or residue. Rinse thoroughly: Use clean water to remove any remaining cleaning solution.

Q: What temperature do ceramic magnets lose their magnetism at?

A: The maximum temperature or maximum operating temperature represents the hottest temperature to which a ceramic magnet can be exposed without losing its magnetic strength. Most ceramic magnets have a maximum temperature of roughly 300 to 500 degrees Fahrenheit.

As one of the most professional ceramic disc magnets manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy customized ceramic disc magnets at competitive price from our factory.

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